<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
			var aaa = new stu();
			console.log(aaa);
			aaa.say();
			
			function stu(){
				this.say = function () {
					console.log(this);
				}
			}
		</script>
	</body>
</html>
